Deep-well pump.



L. W. BODlNSON-,

DEEP WELL PUMP.

APPLICATION FILED SEPT. e. 1912.

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COLUMBIA PLANDCIRAPH c0., WASHIN aaaaaaa c.

Patented Sept. '7, 1915.

s SHEETS-gSEET I. Z

L. W. BODINSON.

DEEP WELL PUMP.

APPLICATION FILED SEPT. s. 1912.

PatentedSept. 7, 1915.

6 SHEETS-SHEET 2.

mam'wo L. W. BODIN'SON.

DEEP WELL PUMP.

APPLICATION FILED SEPT. 6. 1912.

PatentedSept. 7, 1915.

6 SHEETS-SHEET 3.

I r V COLUMBIA PLANoukAPl-l c0.,wASHINuTON. D. c.

L. W. BODINSON.

DEEP WELL PUMP.

APPLICATION FILED SEPT. e. 1912.

Patented Sept. 7, 1915.

6 SHEETS-SHEET 4.

COLUMBIA PLANOGRM'H C0.,\VASH|NOTON. D. c.

L. W.'BODIN S()N.

DEEP WELL PUMP.

APPLICATION FILED SEPT. 6. 1912.

e SHEETS-SHEET 5.

Paten tedSept. 7, 1915.

L. W. BODINSON.

DEEP WELL PUMP.

APPLICATION FILED sEPLe. 1912.

Patented Sept. 7,1915.

6 SHEETS-SHEET 6.

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LABS w. Bomivson, or AURORA, minim, ASSIGNOR To 'rnn AMERICAN WELLWORKS, or AURORA, ILLINOIS, A CORPORATION or ILLINOIS.

DEEP-WELL; PUMP.

Specificationof Letters Patent.

Patented Sept. 7, 1915.

Application filed, September c.1912. Serial no. 718,843.

and in an application of Matthew'T. Chapman,- Serial No. 426,556, filedApril 11, 1908.

it has for its object to provide certain improvements by which thecapacity of the pump is greatly increased and by which the several partsof the pump may properly be supported in the well and may readilyberemoved, when desired. 1 accomplish this object as illustrated in thedrawingsand as hereinafter described.

lVhat I regard as new is set forth in the claims. 1

In the accompanying drawings,Figure 1 is a vertical section illustratingthe upper portion of the well-tube and pumping mechanism. Fig. 2 is asimilar view, taken at right angles to the view shown in Fig. 1. Fig. 3is a horizontal section on line 33 of Fig. 1. Fig. 1 is ahorizontalsection'on line H of Fig. 1, Figs. 5 and 6 are verticalsections of the intermediate portion of the well-tube and pumpingmechanism, being extensions downward of the views shown in Figs. 1 andrespectively. Fig. 7 is a hori. zontal section on line 77 of Fig. 5.Fig. 8 is a horizontal section on line 88 of Fig. 5. Figs. 9 and 10 areextensions-downward of the views shown in Figs. 5 and 6 respectively.Fig. 11 is a vertical section of, the upper portion of the well-tube andpumping mechanism, showing a modified arrangement. Fig. 12 is asectional view of the construction shown in Fig. 11, taken at rightangles to that view. Fig. 13'is a horizontal section on line l313 ofFig/11. l l'is a horizontal section on line 1414 of Fig. 11. Figs. 15and 16 are extensions downward of the views shown in Figs. 11 and 12respectively. Fig. 17 is a horizontalsection on line 1717 of Fig. 15..Fig. 18 is a horizontal section on line l8118 of Fig. 15. Figs. 19 and20 aresectional views, being patent to R. E. L.'

downward extensions respectively of the views shown in Figs. 15 and 16;and Fig. 21 is a View showing a modified'arrangement of the upperportion of the well-tube and pumping mechanism.

Referring to the drawings, and more particularly to Figs. 1 to 10,inclusive :22

23 24 and 25 indicate several sections of a well-tube which extendsbelow the normal surface of the water in the well. Sections 22-23 are:connected by a coupling 26, the end portions of which arescrew-threaded, its intermediate portion being tapered so as to flareupwardly, as shown in Fig. 1. It will benoted that the upper section 22of the well-tube is of somewhat greater di aineter than the section 23,and in like manner the sections 24-25 are progressively of lessdiameter. I 27 indicates a similar coupling which connects the sections23 and 24c of the well-tube, and 28 indicates a similar coupling whichconnects the'sections 24: and 25.

2930 indicate the upper sections of a tubular pump-rod, the uppermostsection 29 extending to theupper end of the well and being connected toand operatedby any suit able pumping mechanism by which it may bereciprocated. Sections 29-30 are connected by a cage 31, the endportions of which are screw-threaded and screwed upon the-adjoining endsof said sections 29'-30.

The cage 31 is also provided at its endswith clamps 3233, which embracesections 29- 30. of the pump-rod respectively and being clamped thereon,serve to prevent said sections from unscrewing. The purpose of the cage31 is to let water pass out of the pumprod section into the space 34which lies between the said pump-rod section and the well-tube'22. 35indicates a tapered valve block which fits closely in theintermediateportion in the coupling 26, but maybe withdrawn in an upwarddirection. Block 35 is provided with vertical passages 36 extendingthrough it, which passages are normally closed against the downward flowof water by a ring-valve 38. which is seated upon the upper surface ofthe block 35 over said passage, and is pressed down by a spring 39.

4-0 indicates a cage which fits upon the pump-rod section 30, over thevalve 38, and

is provided at its lower end with a collar 4L1 which screws upon areduced portion 37 of v Y I a reverse direction. The block '26 is alsothe block3'5. The cage 40, therefore, serves to hold the spring 89 inplace and limits the upward movement of the valve 38. 1 i 42 indicatespacking interposed-between the collar 41 and the block 35, which pack-'ing'is compressedv by the eollar 4l', thereby preventing leakagebetween the block and the coupling 26. By this construction water may beforcedupward through the passages 86 into the chamber 84, but cannotpass in provided centrally with a sleeve 43 which fits. closely upon thepump-rod section 30, as shown in Fig. 1. Saidsleeve carries at its lowerend a compressing collar or nut 43? for compressing packin'g 'whichis'in- I terposed'between the said'collar and the pump-rod section30;,thus leakage between the pump-rod section30 and the sleeve 43 isprevented. q r i 44 indicates apiston or plunger which is fitted in thewell-tube" section 23 and recip- .rocates'therein, said tube sectionforming I the barrel or cylinder of apump.

46indicates packing between the piston 44 and .the welltube section 23,said packing being compressed by :collars 47-48, screwed upon'the lowerportion of thepis- ,ton, which is'reduced' in diameter,.as shown inFig.1 The pisto'n'44 is connected by a coupling 49 with 'the-lowerend ofthe pump *rod'section 30, said coupling being screwed uponthe lower endof said'pump-rod sectically to form a continuation of the pump tion andinto the upper-end portion of the piston The piston 44 is provided witha concentric tube 50, which is adapted pracqrod. section 30, with-whichit communicates by means of the coupling 49, as shown in '51 indicates achamber in the piston 44 between the tube 50 and the outer wall of saidpiston, which chamber communicates by passages52 with a chamber 53 inthe welltube' section 28', above the piston 44; i

54' indicates a:ring-val1ve which is seated upon the upper end ofthepiston 44 and s pressed, down onits seat by a spring 55' fitted aroundthe-upper portion of the coupling 49, as shown in Fig. 1.. By thisarrangement water may fiow upward through the passages 52 into thechamber53, cannot How in a reverse direction.

T 0 downloy a spring 58.

but

59 i d'cates an inner tubular pump-rod which forms a continuationdownward of the tube;50,to the lower end of which it isv screwed, asshown in Figs. 1 and 2.

' 60 indicates an outer tubular pumpro-d which'is of somewhat greaterdiameter than the section 59, around which it is disposed,

the upper end of. said pump-rod 60 being screwed to the lower endof thepiston 44,

said piston being provided with an upturned flange 61 for that purpose.

62 indicates ports at the lower end of the piston 44, which affordcommunication between the chamber 51 and a chamber 63 which surroundsthe outer pump-rod 60.

64 indicates a ring-valve which is fitted upon the pump-rod 60 below thelower end of the piston 44, said valvebeing adapted to fit against thelower end of said piston to close the ports 62. It normally held in itsuppermost postion so as to close said ports by meansof a spring 65 whichrests upon and is supported by a collar 66, secured to the pump-rod 60.The arrangement is such that downward flow of water through the ports 62is permitted, but upward flow 01 water therethrough is prevented.

As best shown in Figs. 5 and 6, the outer pump-rod 60 extends downthrough the coupling 27 and suitable packing 67, carried by a wedgeblock 68 in said coupling, to a second piston 69, fitted in thewell-tube section 24, said pump-rod being connected to said piston byscrewing to the upper end portion thereof, asshown in Fig. 5. The wedgeblock 58 fits closely in the coupling 27 and is packed to preventleakage by packing 70 and a compressin collar 71-which screws upon theblock 68 111 such manner as to compress said packing. The packing 67fits closely around the outer pump-rod-section 60 and is compressed by acollar 72 so as to prevent leakage around said pump-rod. Thisarrangement serves to separate the chamber 63 from the chamber 73 whichis forinedbetween the pump-rod 60 and the well-tube section 24 and liesabove the pis ton 69. The piston 69 is provided with a concentric tube74 which is in alinement with the inner pump-rod 59 and is directlyconnected therewith, as shown in 75 in 5, the parts being screwedtogether. 7 6 indicates a chamber in the upper portion of the piston 69which communicates with the chamber 51 of the piston 44 through anannular passage 77 which occurs between the inner and outer pump-rodsections 59-60, as shown in Figs. 5 and 1. The chamber 76 alsocommunicates with the chamber 73 by passages 78 which are normallyclosed against the downward flow of water by ringvalve 79, normally heldupon its seat by a spring 80. This spring is held in position by acollar 81 mounted upon the outer pump-rod section 60, as shown in Fig.5.

82 indicates packings around the piston 69 between said piston and thesection 24 of the well-tube, said packings being compressed by collars83-84, as shown in Fig. 9.

85 indicates a central tube or passage in ie care the piston 69, belowthe tube 74, as shown Fig. 9, said suction tube extending down into thewell to a sufii'c'ient depth so that air cannot pass into it under theaction of the pump. The suction tube 87 carries a collar 90 at its lowerend, as shown in Fig. 9.

91 indicates passages extending down from the chamber 7 6 to andcommunicating with the upper end of the suction tube 87.

92 indicates passages affording communication between the chamber 7 3and the chamber 86. I

94 indicates a ring-valve in the chamber 86, which is adapted to overliethe lower ends of the passages 92 to close the same against upward flowof water, said valve being normally held to itss'eat by spring 89resting on an inwardly projecting flange 95 in said chamber.

95 indicates a ball valve which fits in the upper end of the tube 85closes the same against downward flow of water.

96 indicates a cage which incloses the valve 95 and prevents it frombeing displaced.

97 indicates a chamber which surrounds the suction tube 87 said chamberbeing closed at its lower end a'g ain s't downward flow of water by atapered valve block 98 which fits in the coupling 28 and is substantially of the same construction as the valve block 35. Said valveblock is provided with vertical passages 99 which are normally closedagainst downward flow of water by a ring-valve .100 held down to itsseat by a spring 101. The chamber 97 communicates with the interior of'the tube 85 by ports 102, as shown in Fig.- 10.

The operation of the apparatus thus far described is as follows: On thedown-stroke of the pistons, water will pass up through suction tube 87,and passages91, to chamber 76, whence part of it will pass into chamber73 through passages 78, the valve 79 being lifted off its seat by theaction of the water. The rest of the water will pass up through thepassage 77, and through thefichamjber 51 in the piston 44; thence upthrough passages 52 into chamber 53, the valve 54 'being lifted by theaction of the water. At the same time the water in chamber 97, whichwill have entered said chamber on the previous up-stro-ke of thepistons, will pass up through ports 102 and tube 85 into chamber 86,valve 95 being liftedby the action of the water, and then will risethrough tubes 7459 and 30 to the outlet, a part of the water passing outthrough the cage 31 into the chamber 34. At the same time the water inthe chamber "63, which will have been filled on the previous up-strokeof the piston 44, will pass up through passages 51 and 56 into the tube30, the valves 57 being lifted by the action of the water. It willthusbe seen that in addition to elevating water to the chamber 34 and tothe uppermost pump-rod section 2 9, the chambers 53 and 73 will havebeen filled with water. On the up str'olre of the pistons water will besucked up into chambers 97 in the lower part of the well rising throughpassages 99,

the valve 100 being raised from its seat by action of the water. At thesame time, water in the chamber 73 will be forced downward throughpassages 92 into chamher 86, valve 94 being pressed down ofi' its seatby the down flowing water. The water will then flow up through tube 74as it cannot pass down below the chamber 86 because of the valve 95. Itwill therefore rise through tube 59 and the connecting tubes to theoutlet. At the same time water will be drawn up into the chamber 51 inplunger 44 by said plunger and will pass down through the ports 62 intothe chamber 63, filling said chamber, and the water in cham- 'ber 53above the plunger 44 will be raised through passages 36 to chamber 34.

It will be seen .from the foregoing de- 'scription that each of the twoplungers opcrates to lift a separate body of water both on thenip-stroke and on the down-stroke so that the pump is a doubledouble-acting pump, its capacity being 1.6 times that of a doubleactingpump. Furthermore, owing to the construction described, all operatingparts of the pump may readily be removed when desired, For example, when"the plungerrod is lifted above the length of its stroke, collar '90will engage the lower projecting portion of the valve block 98 and willlift it off its seat. At the same time collar 81 will engage thelowerend of the block 68 and will lift it out of'its seat in the coupling 27,and coupling sleeve 49 will engage the lower end of the valve 35 andlift it off its seat. Thus the pump-rods, with the pistons and theseveral valves and blocks may all be withdrawn from the well.

InFigs. 11 to 20 inclusive I have shown a pump operating in the same wayas that already described so far as the elevation of water is concerned,but the construction is such that the several valves cannot be removedwithout unscrewing the several sec tions going to make up the well-tube.

Referring to the latter fi'gures,-l03 indicates the uppermost section ofthe well-tube which screws into the upper end of a coupling 104, thelatter being screwed to the upper end of a larger we'll-tube section105, which is larger in diameter than section 103.

V with the block 68. The block 108 is screw- The section105 forms thebarrel' or cylinder in which the upper piston 106' operates, the

latter being similar in construction to the piston 44. 107 indicates alower well-tube ,section which is connected to the section 106 by ablock 108 which corresponds in function threaded to receive the adjacentends of the well-tube sections 105-107 and is provided with a peripheralrib 109 which fits be tween the. adjoining ends of said well-tube "tightjoint.

well-tube section which is coupled to the sectionspas shown in Fig. 15,thus forming a 110 indicates the lowermost section 107 by a coupling111, as shown in Fig. 19. 112 indicates the uppermost section of thepump-rod which is similar to the section 29, shown in Fig. 1, exceptthat it is perforated to permit water to pass more freely into thewell-tube.

The remaining sections of the pump-rodare the same as those shownin'Figs. 1 to .10.. 113 indicates vavalve block in the upper portion ofthe well-tube section" 105, which corresponds with thevalveblock 35, asshownin Fig. 1, but is supported somewhat difi'erently, valve block 113being screwed into the upper end of the Well-tubesection 105, as shownin Fig. 11, instead ofhaving a wedging'fit in the coupling 26. 11 1'indicates a valve block which corresponds. with valve block 98, shown inFig. 9, but is secured in the lower end portion of the well-tube section108 by being screwedthereinto, as shown in Fig. 19. The other parts ofthe modified construction shown in Figsll to need no furtherdescription'.

In jFig. 21 Th'ave illustrated a further modification in which all thelower sections of the well-tube, aswell as the. several valves, aresupported from the uppermost section of the well-tube, and by which theymay all'be readily withdrawn, when desired.

In the latter construction, 115 indicates the uppermost section ofthewell-tube and 116 the next lower section thereof.

As shown in the drawing, the block 118 is provided with a downwardprojecting portion 121 which is screw-threaded andre- :ceives the upperend of the well-tube section 116; Thus the said well-tube section,together with the sections below it, and the parts'carried thereby, areall supported from the block 118, and may all, together with said block,be withdrawn from the well in the manner described in connection withthe construction shownin Figs. l'to 10.

' My. improved pump 'is especially valuable 117 indiin pumping water oroil from bored wells of small diameter, where difficulty has heretoforebeen experienced in pumping as much water with an ordinary pump ofeither the single or the double-acting type, as the well would supply,my invention providing a double double-acting pump which gives doublethe quantity of water of a doubleacting pump, or four times the quantityof a single-acting pump, less the space occupied by the working parts inthe cylinder.

That which I claim as my invention, and desire to secure by LettersPatent, is,

1. A pump comprising an imperforate well-tube, a tubular pump-rodadapted to reciprocate therein, means dividing said well-tube into upperand lower chambers, plungers in said upper and lower chambers operatedby said pump-rod, means outside of said pump-rod for conducting waterfrom below the lower plunger to the upper chamber above the plungertherein, and upwardly-opening valves secured in said well tube belowsaid lower plunger and above said lipper plunger, respectively.

2. pump comprising an imperforate well-tube, a tubular pump-rod adaptedto reciprocate therein, means dividing said well-tube into upper andlower chambers, plungers in said upper and lower chambers, and a passageoutside the pump-rod for conducting water from below the lower plungerto the upper chamber below the upper plunger.

3. A pump comprising an imperforate well-tube, a tubular pump-rodadapted to reciprocate therein, means dividing said welltube into upperand lower chambers, plungers in said upper and lower chambers, a passageoutside the pump-rod for conducting water from below the lower plungerto the upper chamber below the upper plunger and to the upper chamberabove the plunger therein, and an upwardly-opening valve between theupper portion of said upper chamber and said passage.

4. A pump comprising an imperforate well-tube, a tubular pump-rodadapted to reciprocate therein, means dividing said welltube into upperand lower chambers, plungers in said upper and lower chambers, a passageoutside the pump-rod for conducting water from below the lower plungerto the upper chamber below the upper plunger, a downwardly-opening valvebetween said passage and the lower portion of said upper chamber, apassage through the upper plunger leading from the lower portion of theupper chamber to the pump-rod, and an upwardly-opening valve forpreventing downward flow through the latter passage.

5.. A pump comprising a well-tube, a partition dividing said well-tubeintermediately into upper and lower chambers, a tubular pump-rodextending through said partition and adapted to reciprocate in thewell-tube,

plungers in said upper and lower chambers, said plungers being connectedwith the pump-rod, an upwardly-opening check-valve in the well-tubebelow the lower plunger, a suction tube connected with the lower end ofthe pump-rod and extending through said check-valve, and a passageconnecting said suction tube with the upper chamber.

6. A pump comprising a well-tube, a tubular pump-rod adapted toreciprocate therein, means dividing said well-tube into upper and lowerchambers, plungers in said cham bers, connected with said pump-rod, anupwardlyopening valve in the well-tube above the upper plunger, one ormore passages in the upper plunger connecting the upper and lowerportions of said upper chamber, an upwardly opening valve at the upperends of said passages, a downwardly opening valve at the lower ends ofsaid passages, and means acting on the up-stroke of said pumprod to fillthe space in the upper chamber below the plunger therein and todischarge water in an upward direction through said passages, one ormore passages in the upper plunger for discharging water from such spaceinto the pump-rod on the down-stroke thereof, and a valve closing thelatter passa es on the up-stroke of the pump-rod.

A pump comprising a well-tube, a partition dividing said well-tube intoupper and lower chambers, a tubular pump-rod adapted to reciprocate insaid well-tube, plungers connected with said well-tube and adapted toreciprocate in said chambers respectively, a check-valve in thewell-tube below the lower plunger, said pump-rod communicating with thespace between the lower plunger and said checlovalve, and a suction tubeextending through said checkvalve and communicating with the upperchamber below the plunger therein.

8. A pump comprising a well-tube, a tubular pump-rod adapted toreciprocate therein, means dividing said well-tube into upper and lowerchambers, plungers in said chambers, connected with said pump-rod, achamher in said lower plunger, communicating with the pump-rod, adownwardly opening valve in said chamber, passages in said lower plungerconnecting the latter chamber with the upper portion of the lowerwell-tube chamber in said passages being closed on the downward strokeof the pump-rod by said valve, an upwardly opening valve in said lowerplunger below the chamber therein, a suction tube extending downwardfrom the lower plunger, passages leading from said suction tube throughsaid lower plunger to the lower well-tube chamber above said plunger,and an upwardly opening valve for closing the latterpassages againstdownward flow of water.

9." A-pump comprising a well-tube, a tubular pump-rod adapted toreciprocate therein, means dividing said well-tube into upper and lowerchambers, plungers in said chambers, connected with the pump-rod, achamher, in said lower plunger, communicating with the pump-rod, adownwardly opening valve in said chamber, passages in said lower plungerconnecting the latter chamber with the upper portion of the lowerwell-tube chamber, said passage being closed on the downward stroke. ofthe pumprod by said valve, an upwardly opening valve in said lowerplunger below thechamber therein, a suction tube extending, downwardfrom the lower plunger, passages leading from said suction tube throughsaid lower plunger to the lower well-tube chamber above said plunger, anupwardly opening valve for closing the latter passages against downwardflow of water, a tube connecting the latter passages with the lowerportion of the upper welltube chamber, and a downwardly opening valvefor controlling the flow, of water through said tube.

10, A pump comprising a well-tube, a pump-rod adapted to reciprocatetherein, means dividing said well-tube into upper and lower chambers,plungersin said chambers and connected with the pump-rod, a chamber inthe lower plunger communicating with the pump-rod, passages in the lowerplunger connecting the chamber therein with the lower well-tube chamberabove the lower plunger, a downwardly opening valve in said plungerchamber for closing said passages on the down-stroke of the pumprod, anupwardly opening valve in said lower plunger below the chamber therein,a passage closed by the latter valve on the up-stroke of the pump-rod,said passage communicating with the well-tube below the lower plunger,an upwardly opening valve in the lower portion of the well tube belowthe lower plunger, a suction tube connected with the lower plunger andextending down into the well-tube by the said lower valve, one or morepassages extending from said suction tube toand communicating with theupper portion of the'lower well-tube chamber, an upwardly opening valvefor closing said passages on the up-stroke of the pumprod, one or morepassages in the upper plunger communicating with the upper welltubechamber above the plunger therein, an upwardly opening valve for closingsaid passages on the up-stroke of the pump-rod, and a tube connectingthe latter passages with the passages in the lower plunger lead.- ingfrom the suction tube. v

11. A pump comprising a well-tube, 'a

pump-rod adapted. to reciprocate therein,

means dividing said well-tube into upper and lower chambers, plungers insaid chambers and connected with the pump-rod, a chamber in the lowerplunger communicate ing'with the pump-rod, passagesin the lower plungerconnecting the chamber therein with the lower well-'tube-chamber abovethe'lower plunger, a downwardly opening valve" in said'iplunger chamberfor closing said passages on the down-stroke of the pump-rod, anupwardly opening valve in said lower plunger below the chamber there-;in,' a passage closed by 'the'latter valve on communicating with thewell-tube below the the'up-stroke of the pump-rod, said passage lowerplunger, an upwardly opening valve in the lower portion of the Well-tubebelow the-'lowerplunger, 'a suction tube connected with the lowerplunger and extending down into the well-tube by the said lower valve,one'or more passages extending from said suction tube to andcommunicating with the upper portion of the lower well-tube chamber, anupwardly opening valve for closing said'passages on the'up-stroke of thepumprod, one or more passages in the upper plunger communicating withthe upper well-tube chamber above the plunger therein, an upwardlyopening valve forclosing said passages on the up-stroke of the pump-rod,a

tube connecting the latter passages with the passagesinth'e lowerplunger leading from the suction-tube, ports connecting the .passages,in the upper plunger with the lower "portion of the upper well-tubechamber, a'

downwardly opening valve for closing said ports on the down-stroke ofthepump-rod, one or more passages connecting the lower potion of theupper-well-tube chamber with the pump rod, and an. upwardly openingvalve for closing the latter passages on the up-stroke of the pump-rod.12. A pump comprising a well-tube, a

partition dividin said well-tubeinto upper and lower cham ers, a tubularpump-rod adapted to reciprcoate in said well-tube,

plungers connected with said well-tube and adapted to reciprocate insaid chambers re- 1 spect-ively, a'check-valve in the well-tube belowthe lower plunger, said pump-rod communicating with the space betweenthe lower plunger-and said check-valve, a suction tube.

, and lower chambers, a tubular pump-rod .spectively, a check-valve inthe well-tube beadapted to reciprocate in said well-tube, plungersconnected with said well-tube and adapted-toreciprocate in said chambersrelow the lower plunger, said pump-rod communicating with the spacebetween the lower plunger and said check-valve, a suctiontube extendingthrough said check-valve and communicating with the upper chamber be lowthe plunger therein and also communicating with the upper chamber abovethe plunger therein, and an upwardly-opening valve for preventin downflow of water from the upper portion of the upper chamber.

14:. A pump comprising upper and lower chambers, a tubular pump-rodadapted to reciprocate in said chambers, plungers in said chambers andoperated by said pumprod, a tube surrounding said pump-rod and leadingfrom the lower to the upper chamher, and means co-acting with saidplungers to cause the same to lift a body of water on each upward ordownward stroke thereof.

15. A pump comprising a well-tube, a partition dividing said well-tubeintermediately into upper and lower chambers, a tubular pump-rodextending down through said partition and adapted to reciprocate in thewell-tube, plungers connected with said pump-rod and adapted toreciprocate in said chambers respectively, a check-valve in thewell-tube below the lower plunger, a suction tube connected with thepump-rod and extending down through said check-valve, a passageconnecting said suction tube with the lower chamber above the plungertherein andwith the upper chamber, and an upwardly-opening valve betweenthe upper portion of the lower chamber and said passage.

16. A pump comprising a well-tube, a partition dividing said well-tubeintermediately into upper and lower chambers, a tubular pump-rodextending down through said partition and adapted to reciprocate in thewell-tube, plungers connected with said pump-rod and adapted toreciprocate in said chambers respectively, a check-valve in thewell-tube below the lower plunger, a suction tube connected with thepump-rod and extending down through said check-valve, a passageconnecting said suction tube with the lower chamber above the plungertherein and with the upper chamber below the plunger therein, adownwardly-opening valve between the lower portion of the upper chamberand said passage, and a passage through the upper plunger from the lowerportion of the upper chamber to the pumprod, the latter passage havingan upwardlyopenin valve.

17. pump comprising an imperit'orate well-tube, a partition dividingsaid well-tube into upper and lower chambers, a tubular pump-rod adaptedto reciprocate in said well-tube, plungers connected with said pump-rodand adapted to reciprocate in the upper and lower chambers respectively,a passage through said partition outside of the pump-rod, and valves andpassages acting when the said plungers are reciprocated so that eachplunger operates to lift a separate body of water on the up-stroke andon the down-stroke thereof.

18. A pump comprising upper andlower chambers, a tubular pump-rodadaptedto reciprocate in said chambers, plungers connected with said pump-rodand adapted to reciprocate in said chambers respectively, a tube outsideof said pump-rod adapted to conduct water from the lower to the upperchamber, and means co-acting with said plungers to cause the same tolift a body of water on each upward or downward stroke thereof.

19. A pump comprising a well-tube having upper and lower chambers, atubular pump-rod passing through said chambers, plungers in saidchambers secured to said pump-rod, said pump-rod communicating with thewell-tube below the lower plunger, a tube outside of said pump-rodconnecting said chambers, and valves controlling the flow of water sothat each of said plungers is adapted to receive and discharge water onthe down-stroke and on the up-stroke thereof.

20. A pump comprising upper and lower chambers, a hollow pump-rodextending through said chambers, a passage connecting said upper andlower chambers and means operated by said pump-rod and acting on thedown-stroke thereof to supply liquid to, and discharge liquid from, eachchamber through said pump-rod, and acting on the up-stroke of saidpump-rod to supply liquid to the upper chamber through said pump-rod,and discharge liquid therefrom through said passage, and to supplyliquid to the lower chamber through said passage and discharge liquidfrom said lower chamber through the pump-rod.

21. A pump comprising an imperforate well-tube, a partition dividingsaid welltube into upper and lower chambers, a tubular pump-rod passingthrough both chambers, plungers in said chambers secured to saidpump-rod, and means whereby each plunger receives and discharges liquidon each up and each down-stroke of the pumprod.

22. A double-acting discharge and doubleactin'g supply well pump,consisting of two pumping units one above the other in axial alinement,each having a plunger, a tubular pump rod for reciprocating saidplungers, said pump-rod forming a conduit through which a part of theliquid pumped is supplied and discharged and a passage around saidpump-rod connecting said upper and lower units.

23. A pump comprising upper and lower chambers, a sectional tubularpump-rod adapted to reciprocate therein, a passage connecting the upperand lower chambers, plungers connected with said pump-rod andreciprocating in said chambers, respectively, each of said plungersoperating to draw liquid into its chamber and to discharge liquidtherefrom at each up and each downstroke of the pump-rod, part of thesupply and discharge passing through said pumprod and a part throughsaid passage.

24. A deep well pump consisting of two chambers one above the other,plungers in said chambers, a passage connecting said upper and lowerchambers, respectively, a tubular pump-rod for operating said plungers,and valves and passages associated with said plungers and pump-rod toconstitute two double-acting pumps each of which simultaneously receivesand discharges liquid.

LABS W. BODINSON.

Witnesses:

MATTHEW T. CHArMAN, R. D. MAHAFFEY.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

